MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Mirai


Vendor detections: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d
SHA3-384 hash: 6e7a4255c08cb4ec28ceedefab873b68990ad9bf1f6a717c4b5481989c5714372ad81f9ccf9e666d07c65b4c8986dbf8
SHA1 hash: 8d78e9458d80371f035629185a4d4c6bbc881e9f
MD5 hash: eb52aab85d4272815a1a4076f4c3009a
humanhash: green-vegan-oven-oscar
File name:morte.arm7
Download: download sample
Signature Mirai
Create hunting rule
File size:68'116 bytes
First seen:2025-11-25 06:20:28 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:wzD+A9S5eSz8fC/RIe019D7GFFVfM6txXL3MNrZrmXbLJk:IcLz8a0GFPfM6zL3Mp5m/a
TLSH T17C63020DC8711D73AC332B3A85ED4E024B2949AAD16A7137961135282E4F199FBFF74B
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter abuse_ch
Tags:elf mirai UPX
File size (compressed) :68'116 bytes
File size (de-compressed) :182'265 bytes
Format:linux/arm
Unpacked file: 802f7f2c5adeb565137aa94763e0953b5f9a534a961fab8884443e4ebd013364

Intelligence

File Origin
# of uploads :
1
# of downloads :
41
Origin country :
DE DE
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sets a written file as executable
Runs as daemon
Receives data from a server
Kills processes
Sends data to a server
Launching a process
Substitutes an application name
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
masquerade mirai packed upx
Link:
https://www.filescan.io/uploads/69254abddeea95d50b267a13/reports/c9c6c7f2-4d52-4f27-8764-ec52fade49e7/overview
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-11-25T03:27:00Z UTC
Last seen:
2025-11-25T11:38:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.b HEUR:Backdoor.Linux.Gafgyt.bl HEUR:Backdoor.Linux.Gafgyt.bj
Link:
https://opentip.kaspersky.com/257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/65aa9d1c-7d35-4af8-b7e4-b47e69ec5b5a
Behavior Graph:
Download SVG
%3 guuid=c04b9f56-1e00-0000-34b8-dca6b8090000 pid=2488 /usr/bin/sudo guuid=9a1f9059-1e00-0000-34b8-dca6bf090000 pid=2495 /tmp/sample.bin guuid=c04b9f56-1e00-0000-34b8-dca6b8090000 pid=2488->guuid=9a1f9059-1e00-0000-34b8-dca6bf090000 pid=2495 execve
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c1c0fba9-fdf7-4765-9f5c-428f50c7cf87
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1820310
Signature
Deletes system log files
Drops files in suspicious directories
Manipulation of devices in /dev
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Sends malformed DNS queries
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1820310 Sample: morte.arm7.elf Startdate: 25/11/2025 Architecture: LINUX Score: 76 31 vcute69.bounceme.net. [malformed] 2->31 33 41.216.189.88, 60616, 60618, 60620 AS40676US South Africa 2->33 35 Multi AV Scanner detection for submitted file 2->35 37 Sample is packed with UPX 2->37 10 morte.arm7.elf 2->10         started        signatures3 39 Sends malformed DNS queries 31->39 process4 process5 12 morte.arm7.elf 10->12         started        process6 14 morte.arm7.elf 12->14         started        file7 29 /etc/init.d/sysd, POSIX 14->29 dropped 45 Sample tries to set files in /etc globally writable 14->45 47 Drops files in suspicious directories 14->47 49 Sample tries to persist itself using System V runlevels 14->49 18 morte.arm7.elf 14->18         started        20 morte.arm7.elf sh 14->20         started        signatures8 process9 process10 22 morte.arm7.elf 18->22         started        25 morte.arm7.elf 18->25         started        27 sh cp 20->27         started        signatures11 41 Manipulation of devices in /dev 22->41 43 Deletes system log files 22->43
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-11-25 06:21:32 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ev6e644v6wimge5xkeur3dbaq6tdst3ui7olejcfathw4hwqzngq._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet credential_access discovery execution persistence upx
Link:
https://tria.ge/reports/251125-g4fsgshp4w/
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
Changes its process name
Reads system network configuration
Reads process memory
Enumerates active TCP sockets
Enumerates running processes
Modifies init.d
Modifies rc script
Mirai
Mirai family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/268b7dcb-5b39-4180-8a17-ee5b337e4c71
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf 257c4f7395f590c313b751291d8c2087a6394f7447dcb2244504cf6e1ed0cb4d

(this sample)

Mirai

elf 802f7f2c5adeb565137aa94763e0953b5f9a534a961fab8884443e4ebd013364

  
URLhaus
https://urlhaus.abuse.ch/url/3716231/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 802f7f2c5adeb565137aa94763e0953b5f9a534a961fab8884443e4ebd013364
  
Dropping
MD5 2324ce100fe41b407a396bb089229625

Comments